#include <rpc/rpc.h>
#include <rpc/pmap_prot.h>
-#ifdef HAVE_TIRPC_NETCONFIG_H
-#include <tirpc/netconfig.h>
-#include <tirpc/rpc/rpcb_prot.h>
+#ifdef HAVE_LIBTIRPC
+#include <netconfig.h>
+#include <rpc/rpcb_prot.h>
#endif
#include "nfsrpc.h"
* Rpcbind's local socket service does not seem to be working.
* Disable this logic for now.
*/
-#ifdef HAVE_XDR_RPCB
+#ifdef HAVE_LIBTIRPC
#undef NFS_GP_LOCAL
-#else /* HAVE_XDR_RPCB */
+#else /* !HAVE_LIBTIRPC */
#undef NFS_GP_LOCAL
-#endif /* HAVE_XDR_RPCB */
+#endif /* !HAVE_LIBTIRPC */
-#ifdef HAVE_XDR_RPCB
-const static rpcvers_t default_rpcb_version = RPCBVERS_4;
-#else
-const static rpcvers_t default_rpcb_version = PMAPVERS;
-#endif
-
-static const char *nfs_gp_rpcb_pgmtbl[] = {
- "rpcbind",
- "portmap",
- "portmapper",
- "sunrpc",
- NULL,
-};
+#ifdef HAVE_LIBTIRPC
+static const rpcvers_t default_rpcb_version = RPCBVERS_4;
+#else /* !HAVE_LIBTIRPC */
+static const rpcvers_t default_rpcb_version = PMAPVERS;
+#endif /* !HAVE_LIBTIRPC */
+#ifdef HAVE_DECL_AI_ADDRCONFIG
/*
- * Discover the port number that should be used to contact an
- * rpcbind service. This will detect if the port has a local
- * value that may have been set in /etc/services.
+ * getaddrinfo(3) generates a usable loopback address based on how the
+ * local network interfaces are configured. RFC 3484 requires that the
+ * results are sorted so that the first result has the best likelihood
+ * of working, so we try just that first result.
*
- * NB: s_port is already in network byte order.
- *
- * Returns network byte-order port number of rpcbind service
- * on this system.
+ * Returns TRUE on success.
*/
-static in_port_t nfs_gp_get_rpcb_port(const unsigned short protocol)
+static int nfs_gp_loopback_address(struct sockaddr *sap, socklen_t *salen)
{
- struct protoent *proto;
+ struct addrinfo *gai_results;
+ struct addrinfo gai_hint = {
+ .ai_flags = AI_ADDRCONFIG,
+ };
+ socklen_t len = *salen;
+ int ret = 0;
+
+ if (getaddrinfo(NULL, "sunrpc", &gai_hint, &gai_results))
+ return 0;
+
+ switch (gai_results->ai_addr->sa_family) {
+ case AF_INET:
+ case AF_INET6:
+ if (len >= gai_results->ai_addrlen) {
+ memcpy(sap, gai_results->ai_addr,
+ gai_results->ai_addrlen);
+ *salen = gai_results->ai_addrlen;
+ ret = 1;
+ }
+ }
- proto = getprotobynumber((int)protocol);
- if (proto != NULL) {
- struct servent *entry;
+ freeaddrinfo(gai_results);
+ return ret;
+}
+#else
+/*
+ * Old versions of getaddrinfo(3) don't support AI_ADDRCONFIG, so we
+ * have a fallback for building on legacy systems.
+ */
+static int nfs_gp_loopback_address(struct sockaddr *sap, socklen_t *salen)
+{
+ struct sockaddr_in *sin = (struct sockaddr_in *)sap;
- entry = getservbyname("rpcbind", proto->p_name);
- if (entry != NULL)
- return (in_port_t)entry->s_port;
+ memset(sin, 0, sizeof(*sin));
- entry = getservbyname("portmapper", proto->p_name);
- if (entry != NULL)
- return (in_port_t)entry->s_port;
+ sin->sin_family = AF_INET;
+ sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ *salen = sizeof(*sin);
- entry = getservbyname("sunrpc", proto->p_name);
- if (entry != NULL)
- return (in_port_t)entry->s_port;
- }
- return htons((uint16_t)PMAPPORT);
+ return 1;
}
+#endif
/*
* Plant port number in @sap. @port is already in network byte order.
case AF_INET6:
sin6->sin6_port = port;
break;
- default:
- fprintf(stderr, "%s: unrecognized address family\n",
- __func__);
}
}
+/*
+ * Look up a network service in /etc/services and return the
+ * network-order port number of that service.
+ */
+static in_port_t nfs_gp_getservbyname(const char *service,
+ const unsigned short protocol)
+{
+ const struct addrinfo gai_hint = {
+ .ai_family = AF_INET,
+ .ai_protocol = protocol,
+ .ai_flags = AI_PASSIVE,
+ };
+ struct addrinfo *gai_results;
+ const struct sockaddr_in *sin;
+ in_port_t port;
+
+ if (getaddrinfo(NULL, service, &gai_hint, &gai_results) != 0)
+ return 0;
+
+ sin = (const struct sockaddr_in *)gai_results->ai_addr;
+ port = sin->sin_port;
+
+ freeaddrinfo(gai_results);
+ return port;
+}
+
+/*
+ * Discover the port number that should be used to contact an
+ * rpcbind service. This will detect if the port has a local
+ * value that may have been set in /etc/services.
+ *
+ * Returns network byte-order port number of rpcbind service
+ * on this system.
+ */
+static in_port_t nfs_gp_get_rpcb_port(const unsigned short protocol)
+{
+ static const char *rpcb_netnametbl[] = {
+ "rpcbind",
+ "portmapper",
+ "sunrpc",
+ NULL,
+ };
+ unsigned int i;
+
+ for (i = 0; rpcb_netnametbl[i] != NULL; i++) {
+ in_port_t port;
+
+ port = nfs_gp_getservbyname(rpcb_netnametbl[i], protocol);
+ if (port != 0)
+ return port;
+ }
+
+ return (in_port_t)htons((uint16_t)PMAPPORT);
+}
+
/*
* Set up an RPC client for communicating with an rpcbind daemon at
* @sap over @transport with protocol version @version.
* client. Otherwise returns NULL, and rpc_createerr.cf_stat is set to
* reflect the error.
*/
-static CLIENT *nfs_gp_get_rpcbclient(const struct sockaddr *sap,
+static CLIENT *nfs_gp_get_rpcbclient(struct sockaddr *sap,
const socklen_t salen,
const unsigned short transport,
const rpcvers_t version,
struct timeval *timeout)
{
- struct sockaddr_storage address;
- struct sockaddr *saddr = (struct sockaddr *)&address;
- rpcprog_t rpcb_prog = nfs_getrpcbyname(RPCBPROG, nfs_gp_rpcb_pgmtbl);
-
- memcpy(saddr, sap, (size_t)salen);
- nfs_gp_set_port(saddr, nfs_gp_get_rpcb_port(transport));
+ static const char *rpcb_pgmtbl[] = {
+ "rpcbind",
+ "portmap",
+ "portmapper",
+ "sunrpc",
+ NULL,
+ };
+ rpcprog_t rpcb_prog = nfs_getrpcbyname(RPCBPROG, rpcb_pgmtbl);
- return nfs_get_rpcclient(saddr, salen, transport, rpcb_prog,
+ nfs_gp_set_port(sap, nfs_gp_get_rpcb_port(transport));
+ return nfs_get_rpcclient(sap, salen, transport, rpcb_prog,
version, timeout);
}
* Returns a '\0'-terminated string if successful; otherwise NULL.
* rpc_createerr.cf_stat is set to reflect the error.
*/
-#ifdef HAVE_XDR_RPCB
+#ifdef HAVE_LIBTIRPC
static char *nfs_gp_get_netid(const sa_family_t family,
const unsigned short protocol)
return NULL;
}
-#endif /* HAVE_XDR_RPCB */
+#endif /* HAVE_LIBTIRPC */
/*
* Extract a port number from a universal address, and terminate the
return (int)(status == RPC_SUCCESS);
}
-#ifdef HAVE_XDR_RPCB
+#ifdef HAVE_LIBTIRPC
/*
* Initialize the rpcb argument for a GETADDR request.
*
- * The rpcbind daemon ignores the parms.r_owner field in GETADDR
- * requests, but we plant an eye-catcher to help distinguish these
- * requests in network traces.
- *
* Returns 1 if successful, and caller must free strings pointed
* to by r_netid and r_addr; otherwise 0.
*/
parms->r_vers = version;
parms->r_netid = netid;
parms->r_addr = addr;
- parms->r_owner = "nfs-utils"; /* eye-catcher */
+ parms->r_owner = "";
return 1;
}
return port;
}
-#endif /* HAVE_XDR_RPCB */
+#endif /* HAVE_LIBTIRPC */
/*
* Try GETPORT request via rpcbind version 2.
return port;
}
-#ifdef HAVE_XDR_RPCB
+#ifdef HAVE_LIBTIRPC
static unsigned short nfs_gp_getport_rpcb(CLIENT *client,
const struct sockaddr *sap,
return port;
}
-#endif /* HAVE_XDR_RPCB */
+#endif /* HAVE_LIBTIRPC */
static unsigned long nfs_gp_getport_pmap(CLIENT *client,
const rpcprog_t program,
struct timeval timeout)
{
switch (sap->sa_family) {
-#ifdef HAVE_XDR_RPCB
+#ifdef HAVE_LIBTIRPC
case AF_INET6:
return nfs_gp_getport_rpcb(client, sap, salen, program,
version, protocol, timeout);
-#endif /* HAVE_XDR_RPCB */
+#endif /* HAVE_LIBTIRPC */
case AF_INET:
return nfs_gp_getport_pmap(client, program, version,
protocol, timeout);
}
/**
- * nfs_rcp_ping - Determine if RPC service is responding to requests
+ * nfs_rpc_ping - Determine if RPC service is responding to requests
* @sap: pointer to address of server to query (port is already filled in)
* @salen: length of server address
* @program: requested RPC program number
const rpcprog_t program, const rpcvers_t version,
const unsigned short protocol, const struct timeval *timeout)
{
+ struct sockaddr_storage address;
+ struct sockaddr *saddr = (struct sockaddr *)&address;
CLIENT *client;
struct timeval tout = { -1, 0 };
int result = 0;
if (timeout != NULL)
tout = *timeout;
- client = nfs_get_rpcclient(sap, salen, protocol, program, version, &tout);
+ memcpy(saddr, sap, (size_t)salen);
+ client = nfs_get_rpcclient(saddr, salen, protocol,
+ program, version, &tout);
if (client != NULL) {
result = nfs_gp_ping(client, tout);
CLNT_DESTROY(client);
const rpcvers_t version,
const unsigned short protocol)
{
+ struct sockaddr_storage address;
+ struct sockaddr *saddr = (struct sockaddr *)&address;
struct timeval timeout = { -1, 0 };
unsigned short port = 0;
CLIENT *client;
- client = nfs_gp_get_rpcbclient(sap, salen, protocol,
+ memcpy(saddr, sap, (size_t)salen);
+ client = nfs_gp_get_rpcbclient(saddr, salen, protocol,
default_rpcb_version, &timeout);
if (client != NULL) {
- port = nfs_gp_getport(client, sap, salen, program,
+ port = nfs_gp_getport(client, saddr, salen, program,
version, protocol, timeout);
CLNT_DESTROY(client);
}
const rpcvers_t version,
const unsigned short protocol)
{
- struct addrinfo *gai_results;
- struct addrinfo gai_hint = {
- .ai_flags = AI_ADDRCONFIG,
- };
+ struct sockaddr_storage address;
+ struct sockaddr *lb_addr = (struct sockaddr *)&address;
+ socklen_t lb_len = sizeof(*lb_addr);
unsigned short port = 0;
- int error;
#ifdef NFS_GP_LOCAL
const struct sockaddr_un sun = {
#endif /* NFS_GP_LOCAL */
if (port == 0) {
- error = getaddrinfo(NULL, "sunrpc", &gai_hint, &gai_results);
- if (error == 0) {
- port = nfs_getport(gai_results->ai_addr,
- gai_results->ai_addrlen,
+ if (nfs_gp_loopback_address(lb_addr, &lb_len)) {
+ port = nfs_getport(lb_addr, lb_len,
program, version, protocol);
- freeaddrinfo(gai_results);
} else
rpc_createerr.cf_stat = RPC_UNKNOWNADDR;
}
* address of the same address family. In this way an RPC server can
* advertise via rpcbind that it does not support AF_INET6.
*/
-#ifdef HAVE_XDR_RPCB
+#ifdef HAVE_LIBTIRPC
unsigned short nfs_rpcb_getaddr(const struct sockaddr *sap,
const socklen_t salen,
const unsigned short protocol,
const struct timeval *timeout)
{
+ struct sockaddr_storage address;
+ struct sockaddr *saddr = (struct sockaddr *)&address;
CLIENT *client;
struct rpcb parms;
struct timeval tout = { -1, 0 };
if (timeout != NULL)
tout = *timeout;
- client = nfs_gp_get_rpcbclient(sap, salen, transport, RPCBVERS_4, &tout);
+ memcpy(saddr, sap, (size_t)salen);
+ client = nfs_gp_get_rpcbclient(saddr, salen, transport,
+ RPCBVERS_4, &tout);
if (client != NULL) {
if (nfs_gp_init_rpcb_parms(addr, addrlen, program, version,
protocol, &parms) != 0) {
return port;
}
-#else /* HAVE_XDR_RPCB */
+#else /* !HAVE_LIBTIRPC */
unsigned short nfs_rpcb_getaddr(const struct sockaddr *sap,
const socklen_t salen,
return 0;
}
-#endif /* HAVE_XDR_RPCB */
+#endif /* !HAVE_LIBTIRPC */
/**
* nfs_pmap_getport - query rpcbind via the portmap protocol (rpcbindv2)
const unsigned long protocol,
const struct timeval *timeout)
{
+ struct sockaddr_in address;
+ struct sockaddr *saddr = (struct sockaddr *)&address;
CLIENT *client;
struct pmap parms = {
.pm_prog = program,
if (timeout != NULL)
tout = *timeout;
- client = nfs_gp_get_rpcbclient((struct sockaddr *)sin,
- (socklen_t)sizeof(*sin),
+ memcpy(saddr, sin, sizeof(address));
+ client = nfs_gp_get_rpcbclient(saddr, (socklen_t)sizeof(*sin),
transport, PMAPVERS, &tout);
if (client != NULL) {
port = nfs_gp_pmap_getport(client, &parms, tout);